Projects
As of January 2012, PrimeGrid is working on or has worked on the following projects:
| Project | Active sieve project? | Active LLR project? | Start | End | Best result |
|---|---|---|---|---|---|
| 321 Prime Search (primes of the form 3×2n±1) | No | Yes | 30 June 2008 | Ongoing | 3×27033641+1 |
| AP26 Search (Arithmetic progression of 26 primes) | 27 December 2008 | 12 April 2010 | 43142746595714191 + 23681770×23#×n, n = 0…25 (AP26) | ||
| Generalized Fermat Prime Search | No | Yes (PRP) | January 2012 | Ongoing | 475856524288+1, largest known Generalized Fermat prime |
| Cullen Prime Search | No | Yes | August 2007 | Ongoing | 6679881×26679881+1, largest known Cullen prime |
| Message7 | No | 12 June 2005 | August 2005 | PerlBOINC testing successful | |
| Prime Sierpinski Problem | No | Yes | 10 July 2008 | Ongoing | |
| PrimeGen | No | March 2006 | February 2008 | ||
| Proth Prime Search | Yes | Yes | 29 February 2008 | Ongoing | 659×2617815+1, divides F617813 |
| Riesel Problem | Yes | Yes | March 2010 | Ongoing | 252191×25497878-1 |
| RSA640 | No | August 2005 | November 2005 | N/A | |
| RSA768 | No | November 2005 | March 2006 | ||
| Seventeen or Bust | No | Yes | 31 January 2010 | Ongoing | |
| Sophie Germain Prime Search | No | Yes | 16 August 2009 | Ongoing | 18543637900515×2666667-1(2p-1:18543637900515*2666668-1), the largest Sophie Germain prime |
| Twin Prime Search | No | 26 November 2006 | 25 July 2009 | 65516468355×2333333±1, largest known twin primes | |
| Woodall Prime Search | No | Yes | July 2007 | Ongoing | 3752948×23752948−1, largest known Woodall prime |
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Famous quotes containing the word projects:
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—Jane Jacobs (b. 1916)
“One of the things that is most striking about the young generation is that they never talk about their own futures, there are no futures for this generation, not any of them and so naturally they never think of them. It is very striking, they do not live in the present they just live, as well as they can, and they do not plan. It is extraordinary that whole populations have no projects for a future, none at all.”
—Gertrude Stein (1874–1946)